Graphophone-horn.



No. 875,790. PATENTED JAN. '7, 1908. G. W. DUNCAN.

GRAPHOPHONE HORN.

APPLICATION FILED FEB. 18, 1907.

awwawko'c WW m ss G. W 1:] UNIIAN PATENT OFFICE.

GEORGE W. DUNCAN, OF CHICAGO, ILLINOIS.

GRAPHOPHONE-HORN.

Specification of Letters Patent.

- Patented Jan. 7, 1908.

Application fi d February 18. 1907. Serial No. 358.077.

cago, inthe county of Cook and State of Illi-.

nois, have invented certain new and useful Improvements 1nGraphophone-Horns; and I do declare the following to be a full, clear,

and exact description of the invention, such.

as will enable others skilled in the art to which it appertains to makeand. use the same.

This inventionrelates to improvements in graphophone horns. v

The object of the invention is to provide a graphophone horn havingmeans whereby all metallic or screeching sounds will be eliminated sothat the sounds passing therefrom will have a clear natural tone.

With the foregoing and other objects in view, which will appear as thenature of the invention is better understood, the invention consists incertain novel features of construction, combination and arrangement ofparts, as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a side view of a horn arrangedin accordance with the invention; and Fig. 2 is a longitudinal sectionalview of the same.

Referring more particularly to the drawings, 1 denotes a horn which maybe constructed of any suitable material such as sheet metal, wood pulpor fiber,.paper, board, or other composition. Adapted to be applied tothe inner side of the horn is a flexible lining 2 which may be of ansuitable construction, but which is preferably formed of cloth or otherform of textile fabric. The flexible lining 2 may be applied and securedto the horn in any suitable manner, but is here shown and is preferablyhung loosely within the horn and lies a suitable distance therefrom toform between the lining and inner wall of the horn an air space 3. Thelining whichas before stated is hung loosely in the .horn is of somewhatsmaller diameter than the latter and in itsapplication to the horn isdrawn sufliciently taut to cause it to stand away from the horns innersurface, thus to preserve the air space 3 which is referred to and aswill bereadily understood.

The lining 2 is secured at the outer end of the horn preferably by meansof an endless elastic cord or band 4 which is fastened to the. end ofthe lining in any suitable manner, said end of the lining being turnedover the outer end ofv the horn so that the elasticcord or band willengage the outer side of the latter adjacent to the end. Secured to theinner end of the lining is an endless elastic cord or band 5 which whenthe inner end of the lining is drawn through the smaller end of the hornand turned back over said end will engage the outer side of the horn, asclearly shown in the drawings. The cords 4 and 5 when thus engaged withthe horn will securely fasten the ends of the lining while the bodyportion thereof will stand awa from and out of contact with the innerwal of the horn, thus providing for the air space 3, as hereinbeforedescribed.

In order that the end of the lining may be readily drawn through thesmall end of the horn, I preferably attach a short cord 6 to the innerend of the lining and to the free end of the cord' is attached a ball orbutton. When applying the lining, the inner end of the same is let downinto the horn until the ball 7 and cord 6 appear through the smaller endof the horn. The ball is then grasped and the end of tlie lining readilydrawn through the smaller end of the horn and secured, as hereinbeforedescribed.

By providing a flexible lining and arranging the same as herein shownand described, the vibrations of the horn are reduced to such an extentthat the metallic sound usually heard inconnection with phonographreproductions will be entirely eliminated.

From the foregoing description, taken in mgs, the construction andoperation of the invention will be readily understood without requiringa more extended explanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the e invention,as defined by the appended claims.

Having thus 'describedmy. invention, what I claim as new and desire tosecure by Letters-Patent, is

'1. A phonograph horn having a flexible fabric lining arranged looselytherein to ro vide an air space between the lining an inner wall of thehorn, and means for attaching flhe ends of the lining to the terminalslof the 2. A flexible fabric lining adapted to be applied loosely withina phonograph horn, a

cord attached tothe smaller or inner end of connection with theaccompanying drawspirit or sacrificingany of the advantages of t saidlining, a ball on the end of said cord In testimony whereof I havehereunto set whereby said lining may be readily drawn my hand inpresence of two subscribing witthrough the smaller end of the horn, andend nesses.

4 less elastic fastening cords arranged in the GEORGE W. DUNCAN. 5opposite ends of said lining to secure the Witnesses:

same to the opposite ends of the horn, sub- R. W. OBRIAN,

stantially as described. D. I. WEIsz.

